.calendar{
    border:1px solid #000;
    width:300px;
    height: 250px;
    padding:5px;
  
}
.header{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
}
.days{
    display: flex;
    flex-wrap: wrap;
    height: 180px;
}
.empty, .day{
    width:calc(100%/7);
    text-align: center;
    line-height:30px ;
}
.day:hover{
    background-color: #ccc;
    cursor:pointer;
    
}
